﻿//
// System.Security.Cryptography.RijndaelManaged.cs
//
// Authors:
//	Mark Crichton (crichton@gimp.org)
//	Andrew Birkett (andy@nobugs.org)
//	Sebastien Pouliot (sebastien@ximian.com)
//	Kazuki Oikawa (kazuki@panicode.com)
//
// (C) 2002
// Portions (C) 2002, 2003 Motus Technologies Inc. (http://www.motus.com)
// Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using System.Runtime.InteropServices;
using Mono.Security.Cryptography;

namespace Mono.Security.Cryptography
{

    // References:
    // a.	FIPS PUB 197: Advanced Encryption Standard
    //	http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf
    // b.	Rijndael Specification
    //	http://csrc.nist.gov/CryptoToolkit/aes/rijndael/Rijndael-ammended.pdf

    [ComVisible(true)]
    public sealed class RijndaelManaged : Rijndael
    {

        public RijndaelManaged()
        {
        }

        public override void GenerateIV()
        {
            IVValue = KeyBuilder.IV(BlockSizeValue >> 3);
        }

        public override void GenerateKey()
        {
            KeyValue = KeyBuilder.Key(KeySizeValue >> 3);
        }

        public override ICryptoTransform CreateDecryptor(byte[] rgbKey, byte[] rgbIV)
        {
            return new RijndaelManagedTransform(this, false, rgbKey, rgbIV);
        }

        public override ICryptoTransform CreateEncryptor(byte[] rgbKey, byte[] rgbIV)
        {
            return new RijndaelManagedTransform(this, true, rgbKey, rgbIV);
        }
    }
}
